hoersturz

Yellowstone National Park, Mud Volcano Area, bubbling and small eruptions of the Churning Caldron

Yellowstone National Park, Mud Volcano Area, bubbling and small eruptions of the Dragons Mouth Spring

Yellowstone National Park, Mud Volcano Area, bubbling of the Grizzly Fumarole

Yellowstone National Park, Mud Volcano Area, bubbling of the Mud Volcano

Yellowstone National Park, Upper Geyser Basin, eruptions and bubbling of the Grotto Geyser

Yellowstone National Park, Upper Geyser Basin, small eruptions and bubbling of the Spasmodic Geyser

Yellowstone National Park, Upper Geyser Basin, small eruptions and bubbling of the Sawmill Geyser

Yellowstone National Park, waves on the shore of the Yellowstone Lake

Yellowstone National Park, Grand Canyon of the Yellowstone, whooshing of the Lower Falls of Yellowstone River from Red Rock beneath ...

Yellowstone National Park, Grand Canyon of the Yellowstone, whooshing of the Lower Falls of Yellowstone River from Brink of Lower ...

Yellowstone National Park, Grand Canyon of the Yellowstone, whooshing of the Upper Falls of Yellowstone River from Brink of Upper ...

Yellowstone National Park, calls of an Uinta Ground Squirrel nearby Soda Butte in Lamar Valley

Grand Teton National Park, Cascade Canyon, whooshing of the Hidden Falls

Grand Teton National Park, whooshing of the river from Leigh Lake to String Lake

Stereo recording of two people hiking uphill in the snow with touring ski from right to the left.